From 7d185b8bb17eac9e9d673eb483ded0fbf0b28b97 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Mon, 28 Jan 2008 17:11:43 +0100 Subject: [PATCH] mac80211: allow sending multicast frames through virtual ports When reworking the port access control code, I forgot multicast frames and those are now always rejected because the destination station is not known. This changes the code to allow through multicast frames and also avoid the sta hash lookup (which is bound to fail) for them. Signed-off-by: Johannes Berg Signed-off-by: John W. Linville --- net/mac80211/tx.c | 21 +++++++++++++++------ 1 file changed, 15 insertions(+), 6 deletions(-) diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c index 67b509edd43..85d01646abf 100644 --- a/net/mac80211/tx.c +++ b/net/mac80211/tx.c @@ -1409,10 +1409,17 @@ int ieee80211_subif_start_xmit(struct sk_buff *skb, goto fail; } - sta = sta_info_get(local, hdr.addr1); - if (sta) { - sta_flags = sta->flags; - sta_info_put(sta); + /* + * There's no need to try to look up the destination + * if it is a multicast address (which can only happen + * in AP mode) + */ + if (!is_multicast_ether_addr(hdr.addr1)) { + sta = sta_info_get(local, hdr.addr1); + if (sta) { + sta_flags = sta->flags; + sta_info_put(sta); + } } /* receiver is QoS enabled, use a QoS type frame */ @@ -1422,10 +1429,12 @@ int ieee80211_subif_start_xmit(struct sk_buff *skb, } /* - * If port access control is enabled, drop frames to unauthorised - * stations unless they are EAPOL frames from the local station. + * If port access control is enabled, drop unicast frames to + * unauthorised stations unless they are EAPOL frames from the + * local station. */ if (unlikely(sdata->ieee802_1x_pac && + !is_multicast_ether_addr(hdr.addr1) && !(sta_flags & WLAN_STA_AUTHORIZED) && !(ethertype == ETH_P_PAE && compare_ether_addr(dev->dev_addr, -- 2.46.0